There are additional radio observations from midway down the outburst
decline [1]}. Fig. REF b shows this radio emission, extrapolated as
above, onto spectrum 20, the dataset closest in time to the radio
observations. Again, the optical/UV points are not fit by either the
hard X-ray power law extrapolated down (though this time the mismatch is
not so large), or by the radio emission extrapolated up, or by the
disc inferred from the soft X-ray component, as also shown in
[1]}.
